Product Review

The Blower Motor Resistor controls the fan speed in your AC and heating system. If you can no longer adjust the air speed with your AC switch control or your AC and heater no longer blows chances are you need a new Blower Motor Resistor

The AC Blower Motor Resistor is located on lower passenger side dash and is easily accessible by removing a few screws. Installation can be completed in under 20 minutes and you can save hundreds by doing this repair yourself.

Only fits models with MANUAL AC controls. If you are unsure remove your factory blower resistor and insure it looks like the one pictured

Fits the following vehicles:

• 2008-2012 Ford Escape
• 2007-2017 Ford Expedition
• 2004-2014 Ford F-150
• 2008-2010 Ford F-250 Super Duty
• 2008-2010 Ford F-350 Super Duty
• 2008-2010 Ford F-450 Super Duty
• 2008-2010 Ford F-550 Super Duty
• 2011-2013 Ford Fiesta
• 2005-2007 Ford Five Hundred
• 2004-2007 Ford Freestar
• 2005-2007 Ford Freestyle
• 2005-2009 Ford Mustang
• 2006-2008 Lincoln Mark LT
• 2008-2011 Mercury Mariner
• 2005-2007 Mercury Montego
• 2004-2007 Mercury Monterey

Replaces part numbers: 3F2Z-18591-AA, YH-1715, 973-444, 3F2Z18591AA, YH1715, 973444

This is a compatible replacement part manufactured by AA Ignition. This blower motor resistor is NOT a genuine Ford, Mercury, Lincoln, Motorcraft or Dorman part. Ford, Mercury, Lincoln and their associated vehicle models are registered trademarks of their respective owners. These trademarks and part numbers are used in this listing only to identify the vehicles this blower motor resistor fits. AA Ignition is a registered trade mark of GWA Auto Parts Inc.


• Replacement HVAC Blower Motor Resistor - Controls the fan speed in your AC and heating system. If you can no longer adjust the air speed with your AC controls, or your air conditioner system no longer blows, chances are you need a new Blower Motor Resistor.
• Compatible Replacement for Ford, Lincoln & Mercury Vehicles - 2008 - 2012 Escape | 2007 - 2017 Expedition | 2004 - 2014 F-150 | 2008 - 2010 F-250, 350, 450, 550 Super Duty | 2006 - 2008 Mark LT | 2008 - 2011 Mariner | And More, SEE BELOW for all vehicles.
• Replaces Part# - 3F2Z18591AA, YH1715, 973-444 - Easily installs into your AC blower motor. Simply remove the screws that secure the blower motor resistor into the blower, remove the resistor assembly, and install the new resistor in place.
• OEM Fit, Quality, Finish - While this is NOT a genuine OEM part, it is a direct replacement. Only fits models with MANUAL A/C controls. Fits various model years including 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17.
• Lifetime Warranty - This HVAC Blower Fan Motor Resistor Kit comes complete with a Lifetime Warranty. If the climate control resistor ever fails on your F 150, Mark LT, Mariner or other vehicle simply contact us for a replacement. See our website for full details.